Fatal error: Uncaught Error: Class "Garden\Schema\Tests\AbstractSchemaTest" not found in D:\Webserver\Apache24\htdocs\testephp\signxml\vendor\vanilla\garden-schema\tests\ValidationErrorMesageTest.php:16 Stack trace: #0 {main} thrown in D:\Webserver\Apache24\htdocs\testephp\signxml\vendor\vanilla\garden-schema\tests\ValidationErrorMesageTest.php on line 16